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.circleci Fix check-i18n builds (tootsuite#11084) Jun 16, 2019
.dependabot Change dependabot update schedule from live to weekly (tootsuite#10949) Jun 4, 2019
app Removing the unsupported formats transformer Jun 30, 2019
bin Bump webpacker from 3.5.5 to 4.0.2 (tootsuite#10277) Mar 15, 2019
config Merge branch 'instance_only_statuses' of… Jun 25, 2019
db Merge tag 'v2.9.0' into friendcamp-2.9.0 Jun 20, 2019
dist Cache error 410 responses in recommended nginx configuration (tootsui… Mar 30, 2019
lib Bump version to 2.9.2 (tootsuite#11152) Jun 22, 2019
nanobox Resync Nanobox files with the 2.9.0 release (tootsuite#11083) Jun 14, 2019
public Merging v2.8.1 May 5, 2019
spec Merge tag 'v2.9.1' into friendcamp-2.9.1 Jun 25, 2019
streaming Merge tag 'v2.9.2' into instance_only_statuses Jun 25, 2019
vendor Increase files checked by ESLint (tootsuite#9705) Jan 4, 2019
.codeclimate.yml Replace from scss-lint to sass-lint (tootsuite#10958) Jun 4, 2019
.dockerignore Add .bundle to .dockerignore (tootsuite#7895) Jun 26, 2018
.env.nanobox Rename S3_CLOUDFRONT_HOST to S3_ALIAS_HOST. (tootsuite#8423) Aug 25, 2018
.env.production.sample Add ES_PREFIX in .env.production.sample (tootsuite#10087) May 9, 2019
.env.test Do not test PAM authentication by default (tootsuite#9027) Oct 20, 2018
.env.vagrant update vagrant configs (tootsuite#8706) Sep 16, 2018
.eslintignore Increase files checked by ESLint (tootsuite#9705) Jan 4, 2019
.eslintrc.js Refactor icons in web UI to use Icon component (tootsuite#9951) Jan 31, 2019
.foreman Replace sprockets/browserify with Webpack (tootsuite#2617) May 3, 2017
.gitattributes Add .gitattributes file to avoid unwanted CRLF (tootsuite#3954) Jun 26, 2017
.gitignore Ignore elasticsearch directory (tootsuite#7070) Apr 8, 2018
.haml-lint.yml Added haml-lint and fix warnings (tootsuite#2773) May 8, 2017
.nanoignore Remove Storybook (tootsuite#4397) Jul 27, 2017
.nvmrc Upgrade Node.js to v8.x on nvmrc (tootsuite#8023) Jul 15, 2018
.profile Add ffmpeg and dependent packages as well as LD_LIBRARY_PATHs (tootsu… May 24, 2017
.rubocop.yml require rubocop-rails in .rubocop.yml (tootsuite#10974) Jun 6, 2019
.ruby-version Upgrade Ruby to 2.6.1 (tootsuite#9956) Feb 20, 2019
.sass-lint.yml Fix sass-lint config (tootsuite#10982) Jun 6, 2019
.yarnclean Replace from scss-lint to sass-lint (tootsuite#10958) Jun 4, 2019
Aptfile Merge tag 'v2.9.2' into friendcamp-2.9.2 Jun 25, 2019 Add code of conduct from GitHub generator (tootsuite#5674) Nov 13, 2017 Update translating platform has changed to crowdin ( (t… Jun 16, 2019
Capfile remove capistrano/faster_assets from Capfile (tootsuite#2737) May 3, 2017
Gemfile Bump capybara from 3.22.0 to 3.24.0 (tootsuite#11100) Jun 17, 2019
Gemfile.lock Bump capybara from 3.22.0 to 3.24.0 (tootsuite#11100) Jun 17, 2019
Procfile Fix Procfile on OS X (tootsuite#6748) Mar 12, 2018 Change translations badge in README to Crowdin (tootsuite#11054) Jun 12, 2019
Rakefile Initial commit Feb 20, 2016
Vagrantfile Add clearer error when/if gpg fails to install (tootsuite#10228) Mar 10, 2019
app.json Change logo URL for Heroku and Scalingo (tootsuite#4476) Aug 1, 2017
babel.config.js New Crowdin translations (tootsuite#11077) Jun 18, 2019
boxfile.yml Fix rubocop issues, introduce usage of frozen literal to improve perf… Nov 15, 2016
crowdin.yml Update crowdin.yml Jun 12, 2019
package.json Bump enzyme-adapter-react-16 from 1.7.1 to 1.14.0 (tootsuite#11105) Jun 17, 2019
postcss.config.js Increase files checked by ESLint (tootsuite#9705) Jan 4, 2019
priv-config TOR federation (tootsuite#7875) Jun 26, 2018
scalingo.json Add ffmpeg buildpack for scalingo (tootsuite#8500) Aug 28, 2018
yarn.lock Bump enzyme-adapter-react-16 from 1.7.1 to 1.14.0 (tootsuite#11105) Jun 17, 2019


GitHub release Build Status Code Climate Crowdin Docker Pulls

Mastodon is a free, open-source social network server based on ActivityPub. Follow friends and discover new ones. Publish anything you want: links, pictures, text, video. All servers of Mastodon are interoperable as a federated network, i.e. users on one server can seamlessly communicate with users from another one. This includes non-Mastodon software that also implements ActivityPub!

Click below to learn more in a video:




No vendor lock-in: Fully interoperable with any conforming platform

It doesn't have to be Mastodon, whatever implements ActivityPub is part of the social network! Learn more

Real-time, chronological timeline updates

See the updates of people you're following appear in real-time in the UI via WebSockets. There's a firehose view as well!

Media attachments like images and short videos

Upload and view images and WebM/MP4 videos attached to the updates. Videos with no audio track are treated like GIFs; normal videos are looped - like vines!

Safety and moderation tools

Private posts, locked accounts, phrase filtering, muting, blocking and all sorts of other features, along with a reporting and moderation system. Learn more

OAuth2 and a straightforward REST API

Mastodon acts as an OAuth2 provider so 3rd party apps can use the REST and Streaming APIs, resulting in a rich app ecosystem with a lot of choice!


Tech stack:

  • Ruby on Rails powers the REST API and other web pages
  • React.js and Redux are used for the dynamic parts of the interface
  • Node.js powers the streaming API


  • PostgreSQL 9.5+
  • Redis
  • Ruby 2.4+
  • Node.js 8+

The repository includes deployment configurations for Docker and docker-compose, but also a few specific platforms like Heroku, Scalingo, and Nanobox. The stand-alone installation guide is available in the documentation.

A Vagrant configuration is included for development purposes.


Mastodon is free, open source software licensed under AGPLv3.

You can open issues for bugs you've found or features you think are missing. You can also submit pull requests to this repository, or submit translations using Weblate. To get started, take a look at If your contributions are accepted into Mastodon, you can request to be paid through our OpenCollective.

IRC channel: #mastodon on


Copyright (C) 2016-2019 Eugen Rochko & other Mastodon contributors (see

This program is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for more details.

You should have received a copy of the GNU Affero General Public License along with this program. If not, see

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